140577817 has 4 divisors (see below), whose sum is σ = 146689920. Its totient is φ = 134465716.

The previous prime is 140577797. The next prime is 140577841. The reversal of 140577817 is 718775041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 718775041 = 12007 ⋅59863.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140577817 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 140577817.

It is not an unprimeable number, because it can be changed into a prime (140577887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3056017 + ... + 3056062.

It is an arithmetic number, because the mean of its divisors is an integer number (36672480).

Almost surely, 2^140577817 is an apocalyptic number.

It is an amenable number.

140577817 is a deficient number, since it is larger than the sum of its proper divisors (6112103).

140577817 is an equidigital number, since it uses as much as digits as its factorization.

140577817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6112102.

The product of its (nonzero) digits is 54880, while the sum is 40.

The square root of 140577817 is about 11856.5516487721. The cubic root of 140577817 is about 519.9627894971.

The spelling of 140577817 in words is "one hundred forty million, five hundred seventy-seven thousand, eight hundred seventeen".